Morton, A.L., author
Victor Gollancz, 1938
Buku Teks
edited by Albert C. Baugh
Appleton-Century-Crofts, 1948.
Buku Teks
Hall, Walter Phelps, author
Ginn and Company, 1953
Buku Teks
Durant, Ariel, author
Simon & Schuster, 1967
Buku Teks
Lyon, Bryce, author
Harper and Brothers, 1960
Buku Teks